A unique feature of the Bangle.js watches is that users can program their own apps for the devices in the JavaScript programming language and can deploy them on their own watch without having to go through any closed app store model. Furthermore, as the Bluetooth connection for the devices work through web-browser based connections, they all happen client-side, so no data is send to third parties. | A unique feature of the Bangle.js watches is that users can program their own apps for the devices in the JavaScript programming language and can deploy them on their own watch without having to go through any closed app store model. Furthermore, as the Bluetooth connection for the devices work through web-browser based connections, they all happen client-side, so no data is send to third parties. |